The 2012–13 Georgetown Hoyas men's basketball team represented Georgetown University in the 2012–13 college basketball season. They were led by John Thompson III and played their home games at the Verizon Center. They were a member of the Big East Conference. Prior to the January 12 game at St. John's, the team's second leading scorer, Greg Whittington, was suspended indefinitely for academic issues. With a 61–39 win over their rival Syracuse Orange on March 9, 2013, the team clinched their 10th Big East Regular Season Championship. Georgetown lost to 15-seed and tournament newcomer Florida Gulf Coast University 78-68 in the second round of the NCAA tournament. The team was ranked No. 8 in the final Associated Press Poll of the season and No. 17 in the postseason Coaches' Poll.
This was Georgetowns last season as a member of the original Big East Conference. It had been a founding member of the conference in the 1979-80 season and had remained a member for 34 seasons, but the conferences increasingly unstable membership and uncertain future and what Georgetown and the conferences other basketball-only members believed to be its focus on college football at the expense of the interests of its basketball programs led Georgetown and six other Big East members (DePaul, Marquette, Providence, Seton Hall, St. John's, and Villanova) to leave the conference after the end of the 2012-13 season. In 2013, they joined Butler, Creighton, and Xavier in forming a new Big East Conference for the 2013–14 season. The original Big East Conference then added new members of its own and renamed itself the American Athletic Conference for the 2013-14 season.
The final regular-season meeting of Georgetown and Syracuse as Big East rivals on March 9, 2013, set an attendance record at the Verizon Center of 20,972.
Season recap
Without its three top scorers from the previous season – Jason Clark and Henry Sims had graduated and Hollis Thompson had left school a year early to enter the 2012 NBA draft – Georgetown entered the season with no seniors on its roster; the roster included eleven freshman and sophomores, one more than the previous year. Returning were junior Markel Starks at point guard, sophomore Jabril Trawick at guard, junior Nate Lubick, sophomores Mikeal Hopkins, Otto Porter, and Greg Whittington, and redshirt sophomore Aaron Bowen at forward, and junior Moses Ayegba at center. The freshman recruiting class consisted of guard D'Vauntes Smith-Rivera, forward Stephen Domingo, and centers Brandon Bolden and Bradley Hayes. Junior John Caprio made the team as a walk-on guard for the third straight season, and freshman David Allen also walked on as a guard. Sophomore center Tyler Adams, sidelined early the previous season by heart arrhythmia, spent the season on a medical hardship waiver that allowed him to continue at Georgetown on a scholarship without counting against the team's scholarship total; relegated to the bench, he made the most of the situation, acting as a de facto assistant coach.